394479288 has 256 divisors, whose sum is σ = 1347840000. Its totient is φ = 104343552.

The previous prime is 394479287. The next prime is 394479289. The reversal of 394479288 is 882974493.

394479288 is a `hidden beast` number, since 3 + 94 + 479 + 2 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (394479287) and next prime (394479289).

It is a super-2 number, since 2×394479288² = 311227817321973888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394479287) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2647438 + ... + 2647586.

It is an arithmetic number, because the mean of its divisors is an integer number (5265000).

Almost surely, 2^394479288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394479288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (673920000).

394479288 is an abundant number, since it is smaller than the sum of its proper divisors (953360712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394479288 is a wasteful number, since it uses less digits than its factorization.

394479288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 281 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 394479288 is about 19861.5026621855. The cubic root of 394479288 is about 733.4008380467.

The spelling of 394479288 in words is "three hundred ninety-four million, four hundred seventy-nine thousand, two hundred eighty-eight".